diff --git a/Gemfile b/Gemfile
index abf635a..92ca3bf 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 5.2.3'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3'
 # Use Puma as the app server
-gem 'puma', '~> 3.11'
+gem 'puma', '~> 3.12'
 gem 'ransack'
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 5.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index 623c5f3..9d407ec 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -114,7 +114,7 @@ GEM
     polyamorous (2.3.2)
       activerecord (>= 5.2.1)
     public_suffix (4.0.3)
-    puma (3.12.2)
+    puma (3.12.4)
     rack (2.1.1)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -218,7 +218,7 @@ DEPENDENCIES
   devise
   jbuilder (~> 2.5)
   listen (>= 3.0.5, < 3.2)
-  puma (~> 3.11)
+  puma (~> 3.12)
   rails (~> 5.2.3)
   ransack
   sass-rails (~> 5.0)